And this is why she's my sister.

My sister caught my bus the other day.  We got off together and as we were walking home from our stop, an old school bus drove past us.  

Janelle:  "Hey, that's my kindy bus!  Back when I was a dinosaur!"
Johanna:  "Back when you were a dinosaur?  You still are a dinosaur!"

Our conversations usually go nowhere, but they always amuse me.